/*
 * Copyright [2021-present] [ahoo wang <ahoowang@qq.com> (https://github.com/Ahoo-Wang)].
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *      http://www.apache.org/licenses/LICENSE-2.0
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package me.ahoo.wow.webflux.route.event.state

import me.ahoo.wow.event.compensation.StateEventCompensator
import me.ahoo.wow.eventsourcing.snapshot.SnapshotRepository
import me.ahoo.wow.modeling.matedata.AggregateMetadata
import me.ahoo.wow.openapi.BatchComponent
import me.ahoo.wow.openapi.aggregate.event.state.ResendStateEventRouteSpec
import me.ahoo.wow.webflux.exception.RequestExceptionHandler
import me.ahoo.wow.webflux.route.RouteHandlerFunctionFactory
import me.ahoo.wow.webflux.route.toServerResponse
import org.springframework.web.reactive.function.server.HandlerFunction
import org.springframework.web.reactive.function.server.ServerRequest
import org.springframework.web.reactive.function.server.ServerResponse
import reactor.core.publisher.Mono

class ResendStateEventFunction(
    private val aggregateMetadata: AggregateMetadata<*, *>,
    private val snapshotRepository: SnapshotRepository,
    private val stateEventCompensator: StateEventCompensator,
    private val exceptionHandler: RequestExceptionHandler
) : HandlerFunction<ServerResponse> {
    private val handler =
        ResendStateEventHandler(aggregateMetadata, snapshotRepository, stateEventCompensator)

    override fun handle(request: ServerRequest): Mono<ServerResponse> {
        val afterId = request.pathVariable(BatchComponent.PathVariable.BATCH_AFTER_ID)
        val limit = request.pathVariable(BatchComponent.PathVariable.BATCH_LIMIT).toInt()
        return handler.handle(afterId, limit)
            .toServerResponse(request, exceptionHandler)
    }
}

class ResendStateEventFunctionFactory(
    private val snapshotRepository: SnapshotRepository,
    private val stateEventCompensator: StateEventCompensator,
    private val exceptionHandler: RequestExceptionHandler
) : RouteHandlerFunctionFactory<ResendStateEventRouteSpec> {
    override val supportedSpec: Class<ResendStateEventRouteSpec>
        get() = ResendStateEventRouteSpec::class.java

    override fun create(spec: ResendStateEventRouteSpec): HandlerFunction<ServerResponse> {
        return ResendStateEventFunction(
            aggregateMetadata = spec.aggregateMetadata,
            snapshotRepository = snapshotRepository,
            stateEventCompensator = stateEventCompensator,
            exceptionHandler = exceptionHandler,
        )
    }
}
